Suction cleaning device for spinning machines and the like



Aug. 12, 1947. M. F. THOMA 2,425,576

SUCIION CLEANING DEVICE FOR SPINNING MACHINES AND THE LIKE Filed June23, 1944 I'm/e for:

9 f Mei/mm F T60121 I) lit 3 Patented Aug. 12, 1947 SUCTION CLEANINGDEVICE FOR SPINNING MACHINES AND THE LIKE Meinard F. Thoma, Fitchburg,Mass.

Application June 23, 1944, Serial No. 541,807 2 Claims. (Cl. 19-'-139)The present invention relates to an improved suction device foremployment in connection with the drawing rolls of spinning frames andsimilar textile machinery, for collecting and removing broken ends, aswell as for keeping the cylindrical roll surfaces free from anyaccumulation of fly, lint and other waste material.

Suction devices for collecting and removing broken ends from spinningmachinery, as heretofore constructed, have comprised suction headsextending in proximity to the drawing rolls, with each head providing aseries of spaced suction openings arranged to coincide with the spacingof the individual rovings. Such a prior device is shown, for example, inthe copending application of Heinrich Thoma, Serial No. 414,796, filedOctober 13, 1941, for Exhaust plant for spinning machines for catchingand removing thread ends, since issued as Patent No. 2,354,893 on August1, 1944.

According to the present invention, there is provided an improvedsuction device of the above described general construction, which deviceis characterized by the employment of suction heads so constructed as tobe capable of performing the dual function of removing loose ends, aswell as keeping clean the adjacent roll surfaces from any accumulationof fly, lint, or other waste material.

The above and other advantageous features of the invention willhereinafter more fully appear from the following description, consideredin connection with the accompanying drawings, in which- Fig. 1 is adiagrammatic'view, partially in section, showing the installation of asuction device embodying the invention in association with a spinningmachine.

Fig. 2 is a View in front elevation of a portion of the drawing rollsection of the spinning frame shown in Fig. 1, on an enlarged scale.

Fig. 3 is a vertical sectional view along the line 33 of Fig. 2, lookingin the direction of the arrows.

Fig. 4 is a plan view of an individual suction head and its associatedconduit, such as is shown in Fig. 2.

Referring first to Fig. 1, there is shown a portion of a'spinning frameproviding spools I, from which roving 2 is drawn by rolls 3 for windingon spindles 4 in a manner usual with the operation of spinningmachinery. In accordance with the present invention, there isincorporated in the spinning frame a conduit 5 extending longitudinallyof the machine, this conduit being creel spool stand 6.

readily built into the existing machine below the The conduit 5 has arectangular cross section, with one end closed as indicated in Fig. 4,and its opposite open end connected to a suitable suction source asindicated by the arrows at I.

The conduit 5 provides a series of suction heads 8 projecting fromopposite sides thereof, with the several heads of each series extendingalong the machine transversely to the rovings 2, as the latter movedownwardly from the drawing rolls 3 to the spindles 4, as indicated inFig. 1. As best shown in Figs. 2 and 3, each suction head 8 provides acontinuous slot 9 constructed in such a manner as to not only collectand remove broken ends of rovings, but also to prevent the accumulationof fly and lint on the associated drawing rolls 3. It is to be noted inFig. 2 that the front drawing roll 3 provides the usual fluted portionsI0 separated by smooth portions II of smaller diameter, and the suctionslot 9 of each head 8 is formed with end collecting portions I2 andcleaning portions l3 corresponding in length to the above described rollportions I0 and II, respectively.

Referring 'now to Fig. 3, it will be seen that the end collectingportion I2 of each suction slot 9 is located forward of the axis of thefront drawing roll 3 just below the fluted portion I0, so that anybroken ends of roving 2 will be drawn into the suction head, asindicated by the dotted arrciw. Furthermore, it is apparent that thecleaning portion I3 is disposed so that it is close to the smoothportion II of the roll 3 where it will function to remove any fly, lint,or other waste material from this portion of the roll, as indicated 'bythe dotted arrow.

It will also be apparent from a consideration of Fig. 4 that eachsuction head 8, as viewed in plan, will show the slot 9 as a continuousalternating line, with the lengths of the end collecting portions I2 andcleaning portions I3 corresponding to the lengths of the fluted portionsI0 and smooth portions II of the particular front roll 3 with which thehead may be employed. Therefore, each suction head performs a dualfunction, namely to collect and remove any broken ends from theassociated drawing rolls and to continuously exert a cleaning action'onthe smooth roll surfaces between the fluted portions. Obviously, acleaning action is also performed by the end collecting slot portionsI2, with respect to any fly or lint on the fluted roll portions I0.

From the foregoing, it follows that by the present invention there isprovided an improved suction cleaning device for spinning machines andthe like, whereby loose ends of roving will be efiectively gathered andremoved, along with any waste material such as fly and lint resultingfrom the spinning operation.

I claim:

1. A device for collecting and removing broken ends in machines forperforming a textile operation on roving, comprising in combinationcooperating rolls for passing roving therebetween, a suction elementextending longitudinally of the rolls, said element being connected to asource of suction at one end and closed at its other and providing acontinuous longitudinally extending slot of irregular form havingportions extending parallel to the roll surfaces for collecting andremoving broken ends from the rolls, and other portions offset withrespect to said first named slot portions for removing loose fly, lintand other waste material resulting from the textile operation. I

2. A device for collecting and removing broken ends in spinning and likemachines, comprising in combination cooperating pairs of rolls, certainof which provide alternate fluted and smooth portions of difierentdiameters, a suction element extending longitudinally of the rolls, saidelement REFERENCES CITED The following references are of record in thefile of this patent:

UNITED STATES PATENTS Number Name Date 1,104,881 Ezell et al July 28,1914 908,341 Shipp Dec. 29, 1908 299,855 Sargent June 3, 1884 FOREIGNPATENTS Number Country Date 636,247 Gennany Oct. 5, 1936 186,107 GermanyJune 12, 1907 658,780 France June 19, 1929 38,881 France Aug. 8, 1931

